Number 4 needs a name!

After a loss, number 4 is safe and sound (I am 16 weeks and all is looking good). The trouble is we are not making any great headway on finding a name. We won't be finding out . So I guess I am lookig for some suggestions for a sibling for our three great kids:LachlanLeonardAntony WTessaJeanneMargaret WSashaHeatherGrace W
All the middle names are family names and first names are just ones that we liked ANy input would be really appreciated.